Papain is a protein-decomposing enzyme existing in papaya, which can strengthen the digestion and absorption function of gastrointestinal tract. Papaya cellulase: decomposes cellulose, decomposes caked stools, helps the digestive system clear the intestines, and eliminates toxins in time. Can really clear the intestines and detoxify and treat constipation. You can check the shelf life of general papaya enzyme products.